When people talk about proof they usually mean the kind of process drug makers go through, years and years and hundreds of millions in research and testing and study. No one is going to do that for bee gunk that anyone can sell for .10 cents a pill. Curing hep c for $1500 a pill is another story. So a lack of clinical proof doesn't mean every otc supplement is bunk. There are several products that have believed to be positive results or potentially positive results.
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